Ada Girdle Head Oring replacement

[pioui1]

I have bought replacement Outer head shell water sealing ring from Mcmaster carr but they come only in roll, when cut the Oring to the right size, do you use glue to seal it ,

I just find out that the torque spec From ADA are not that good,

thank you for your help

 

[Baja 252]

I don't know if it's right, but i use a tiny drop of super glue to attach the ends together and then a drop of 1211 on both sides of the joint to seal it when I torque it down. I've never had a leak so far.

 

[te4250]

Yeah super glue the o ring together, I’ve used a little motoseal right at the splice too

 

[fx1mark]

I have a Riva head that uses a rope o-ring just like that one. When I get back to the beginning I cut the o-ring slightly long so that when the end is inserted it sits flush with the other end. Once you torque the head down it will squish the o-ring. I have never had a leak. I used to use my finger to insert the o-ring into the groove but now I use a popsicle stick and it is much easier. I also start and end in straight area near where your finger is pointing to have the joint as far away from a sharp curve as possible. I also install the o-ring dry. Here's what the Riva instructions say...

 

[jpswift1]

How many ft/lbs do you torque the head bolts and the girdle studs to?

 

[fx1mark]

How many ft/lbs do you torque the head bolts and the girdle studs to?

If you are asking me, the Riva head's girdle bolts are different than the Ada head. The instructions say head bolts 11 then 22 ft lbs and 18 ft lbs for the girdle bolts.

 

[fx1mark]

The Riva head actiually has two rope o-rings. One between the head and shell and one between the head and cylinder. The Riva head has a total of 10 O-rings. I just remembered, I was about to go riding on my KTM last year and the float bowl started leaking. It uses an O-ring seal. I looked through my O-rings and the only one I had that had the correct dimensions was my Riva head rope seal. I did it just like I do the Riva head. Put it together and there were no leaks. I went riding and ordered the new seal that night. The new seal Is still hanging above my workbench because I haven't needed to install it.

 

[pioui1]

thank you

 

[Big Kahuna]

I have a Riva head that uses a rope o-ring just like that one. When I get back to the beginning I cut the o-ring slightly long so that when the end is inserted it sits flush with the other end. Once you torque the head down it will squish the o-ring. I have never had a leak. I used to use my finger to insert the o-ring into the groove but now I use a popsicle stick and it is much easier. I also start and end in straight area near where your finger is pointing to have the joint as far away from a sharp curve as possible. I also install the o-ring dry. Here's what the Riva instructions say...

I always add some grease to the orings to make them sticky, this way they dont fall out when installing the head.

 

[fx1mark]

I always add some grease to the orings to make them sticky, this way they dont fall out when installing the head.

I used to put silicone grease on all of them but I had one of the o-rings around the spark plug pop out on me. I tried installing them dry two years ago and so far so good. I have to grease the o-rings around the cylinder becuse there is no groove to hold them in place. The mcmaster-carr rope o-rings fit tight in my head and I don't have a problem with them staying in place.